/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
'use strict'

// User service
flowableApp.service('RuntimeAppDefinitionService', [
  '$http',
  '$q',
  '$location',
  'appName',
  function($http, $q, $location, appName) {
    var httpAsPromise = function(options) {
      var deferred = $q.defer()
      $http(options)
        .success(function(response, status, headers, config) {
          deferred.resolve(response)
        })
        .error(function(response, status, headers, config) {
          deferred.reject(response)
        })
      return deferred.promise
    }

    this.getApplications = function() {
      var defaultApps = []

      // Determine the full url with a context root (if any)
      var baseUrl = $location.absUrl()
      var index = baseUrl.indexOf('/#')
      if (index >= 0) {
        baseUrl = baseUrl.substring(0, index)
      }
      index = baseUrl.indexOf('?')
      if (index >= 0) {
        baseUrl = baseUrl.substring(0, index)
      }
      if (baseUrl[baseUrl.length - 1] == '/') {
        baseUrl = baseUrl.substring(0, baseUrl.length - 1)
      }
      if (appName.length > 0 && baseUrl.substring(baseUrl.length - appName.length) == appName) {
        baseUrl = baseUrl.substring(0, baseUrl.length - appName.length - 1)
      }

      var transformAppsResponse = function(value, headersGetter, status) {
        if (status !== 200) {
          return
        }

        var response = JSON.parse(value)
        var customApps = []
        for (var i = 0; i < response.data.length; i++) {
          var app = response.data[i]
          if (app.defaultAppId !== undefined && app.defaultAppId !== null) {
            if (app.defaultAppId === 'tasks') {
              defaultApps.push({
                id: 'tasks',
                titleKey: 'APP.TASKS.TITLE',
                descriptionKey: 'APP.TASKS.DESCRIPTION',
                defaultAppId: app.defaultAppId,
                theme: 'theme-2',
                icon: 'icon icon-clock',
                fixedBaseUrl: baseUrl + '/workflow/' + '/#/',
                fixedUrl: baseUrl + '/workflow/',
                pages: ['tasks', 'processes']
              })
            }
          } else {
            // Custom app
            app.icon = 'glyphicon ' + app.icon
            app.fixedBaseUrl = baseUrl + '/workflow/#/apps/' + app.appDefinitionKey + '/'
            app.fixedUrl = app.fixedBaseUrl + 'tasks'
            app.pages = ['tasks', 'processes']
            app.deletable = true
            customApps.push(app)
          }
        }

        return {
          defaultApps: defaultApps,
          customApps: customApps
        }
      }

      return httpAsPromise({
        method: 'GET',
        url: FLOWABLE.CONFIG.contextRoot + '/app/rest/runtime/app-definitions',
        transformResponse: transformAppsResponse
      })
    }

    this.deleteAppDefinition = function(appDefinitionKey) {
      var promise = httpAsPromise({
        method: 'DELETE',
        url: FLOWABLE.CONFIG.contextRoot + '/app/rest/runtime/app-definitions/' + appDefinitionKey
      })

      return promise
    }
  }
])
